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Discrepancies between leg-to-leg bioelectrical Impedance analysis and computerized tomography in abdominal visceral fat measurement.

Discrepancies between leg-to-leg bioelectrical Impedance analysis and computerized tomography in abdominal visceral fat measurement.
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Lu HK, Chen YY, Yeh C, Chuang CL, Chiang LM, Lai CL, Casebolt KM, Huang AC, Lin WL, Hsieh KC,


Lu HK, Chen YY, Yeh C, Chuang CL, Chiang LM, Lai CL, Casebolt KM, Huang AC, Lin WL, Hsieh KC, (click to view)

Lu HK, Chen YY, Yeh C, Chuang CL, Chiang LM, Lai CL, Casebolt KM, Huang AC, Lin WL, Hsieh KC,

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Scientific reports 2017 08 227(1) 9102 doi 10.1038/s41598-017-08991-y
Abstract

The aim of this study was to evaluate leg-to-leg bioelectrical impedance analysis (LBIA) using a four-contact electrode system for measuring abdominal visceral fat area (VFA). The present study recruited 381 (240 male and 141 female) Chinese participants to compare VFA measurements estimated by a standing LBIA system (VFALBIA) with computerized tomography (CT) scanned at the L4-L5 vertebrae (VFACT). The total mean body mass index (BMI) was 24.7 ± 4.2 kg/m(2). Correlation analysis, regression analysis, Bland-Altman plot, and paired sample t-tests were used to analyze the accuracy of the VFALBIA. For the total subjects, the regression line was VFALBIA = 0.698 VFACT + 29.521, (correlation coefficient (r) = 0.789, standard estimate of error (SEE) = 24.470 cm(2), p < 0.001), Lin's correlation coefficient (CCC) was 0.785; and the limit of agreement (LOA; mean difference ±2 standard deviation) ranged from -43.950 to 67.951 cm(2), LOA% (given as a percentage of mean value measured by the CT) was 48.2%. VFALBIA and VFACT showed significant difference (p < 0.001). Collectively, the current study indicates that LBIA has limited potential to accurately estimate visceral fat in a clinical setting.

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